#include<stdio.h>
int main(){
    	FILE *fp;
        int i, n=0, k=0;
	fp=fopen("source.txt","w");

	for (i=0;i<5;i++) fprintf(fp,"%d",i);

	fclose(fp);

	fp=fopen("source.txt","r");

	fscanf(fp,"%d%d",&n,&k);

	printf("%d,%d",n,k);

	fclose(fp);
    return 0;
}